Below is my transcription of the original
Resly Tone circuit. Click
on image for the full hi-res pdf document. It excludes the
section for the infinitely variable pot on the vibrato speed (in
the red box bottom left on the second schematic), which I have
put in. This just enables more flexibility if desired. A scanned
pdf of the original schematic is here.

Below is the modified Resly Tone circuit
with improved inputs and bypass, and a slight correction down the
bottom middle in the red box. Click
on image for the full hi-res pdf document.

Below is the modified indicator light circuit using a hi intensity LED to replace the inefficient incandescent bulb board. Click
on image for the full hi-res pdf document.